lawmakers are criticizing the fbi for initially keeping secret an investigation that led to the downfall of former cia director david petraeus. >> to have someone out there in such a sensitive position, he may or may not have been having an affair at the time. >> government officials say the investigation started out months ago. joe kelly, a friend of petraeus said he was receiving anonymous threatening e-mails. in the process, it was discovered he had had an affair. a former spokesman for traders said this of the relationship. >> it in about four months ago. >> according to officials, the fbi did not report the incident to his boss or congress or the president until concluding its investigation last week. the president accepted his resignation friday. >> it is very puzzling, and i think it was a mistake because it does happen so fast and so hard. since then, and has been like peeling an onion. >> the national security -- once the fbi concluded there is no national security breach by the cia director, there's really nothing there. >> he is more concerned about what happens next as congre